Burner



,.Nov.' 16 1926. 1,607,106

S. A. STUM 'URNER F'led June 5, 1926 Patented Nov. 16, 1926.

'Um-Tien) STATES PATENToFFics.

SAMUEL A. s'rUM,

OF PROVO, UTAH.

BURNER.

Application led .Tune 3,

less of the pressure or quality of gas used,`

will not back-fire.

A further object is to provide burners utilizing opposed orifices ldisposed in pairs whereby the-jets of flame issuing from the l orifices 'of each pair will meet to effect a thorough mixing and. consumption of the combustible gases, these orifices being so disposed as to prevent 'unconsumed condensed fuel4 from running into and downwardly within the burners. l

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details o f construction hereinafter described and claimed, it being understood th at changes inthe precise embodiment of-thev invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In, theaccompanying drawings the preferred forms of the invention havev been shown.

'In said drawing, l p

Figure 1 is a plan view of a manifold having one arrangement of burners mounted thereon.

Figure 2 is a'section on line 2.42, Figure 1.

Figure 3 vis a section through a modified form of burner. 1 Y

Referring to the figures by characters of reference 1 designates a manifold which, in `thestructure illustrated in Figures .1 and 2 includes parallel pipes connected to a supply pipe 3 so that a combustible gas delivered from the pipe 2 will be distributed to all portions of the manifold. Obviously, however, if desired the manifold can be of other shapes. For example it can be in the form of a straight pipe.'

'In the structure illustrated in Figures 1 and 2 each of the parallel portions of the 192e. serial No. 113,495.

manifold is provided at' desired points with apertures 3 in which are seated the lower threaded ends of brass nipples4. The upper portions of these nipples are provided with long tapers as at 5 merging into abruptly tapered ends 6 in whichv are 'provided small orifices 7. A burner tube 8 having a slightly flared lower end 9 is fitted snugly upon the tapered portion 'i5-of each nipple and is `held against rotation thereon by means of a setscrew 10. Formed in the tubularburner 8 adjacent the upper end of the'nipple therein are air holes 11 and overhanging these air holes isa downwardly fiared apron 12 lextending continuously around the burner tu-be. The upper end of the burner tube has an inclined tubular e-X- tension lor offset 13 the end of which is vertically disposed 'as at 14 and is preferably beveled inwardly as shown at 15. Where burnersare used withhamanifold as shown in Figures 1 and 2 they are arranged in pairs, one burner o f each pair being directly opposite the burner thereofI with the upper inclined portions converging. Thus ajet of fiame issuing from the upper portion of each burner will meet the liet of flame issuing from thc other burner, these two jets meeting at a point midway between the twoA burners so that a thorough mixing ofthe flames will result in complete combustion.

In practice it has been found that the air admitted to each burner through the holes 11 will produce a blue'fiame while the secondary air whichmiXesv with the flame at the outer end of the burner ywill change the flame to a hot orange-green.

Where the burners are mounted on a single pipe constituting a manifold they will be arranged in pairs along the pipe, the burners of each pair having their upper ends converging upwardly. Such an arrangement is so obvious that a detailed descriptionor illustration thereof is not deemed necessary.

Each burner can be of the modified construction illustrated in Figure 3. In this form of device the nipple 16 extending fromthe pipe or manifold .17 is seated in the slightly fiared lower end portion of the burner tube 18 which has air holes 19 overhung by n flared apron 20. This tube is held against rotation b v a set screw 21. IThese .various parts are similar to the corresponding parts of the tube heretofore described.

The modified structure differs from the first described device, however, in that the upper portion of'4 the tube is forked to provide tubular arms 22 diverging upwardly and then curved inwardly toward each other as shown .at 23. The outlets 24 in these two arms are directly opposite each other and the passages within the arms arevso positioned that the vjets of flame issuing from the arms will flow toward each other along upwardly converging lines and meet ata` point midway between the ends of the arms where a thorough mixing of the fiame with the secondary air is effected. These burners can all be made of different sizes to meet the conditions under which they are to be used and the same can also be said of the burners illustrated in Figures 1 and 2.

As the various burner tubes are vertically disposed they can be used to advantage in large water or steam boilers wherein the primary air can be controlled by extending the burner tubes through sheets of asbestos or the like located upon the lower portions of the tubes close to but above the air holes 11. A portion of such a sheet has been indicated by broken lines at 25 in Figure 2. By utilizing a sheet of this type there is no danger of the primary air chilling the boiler and thus reducing the .eiiiciency of the burner. v

Obviously any good thermostat can be used with these burners for the purpose of controlling the ignition of the burners from a pilot which .can be centrally located` It is not thought that illustration or detailed description of this is necessary. i

The hoods located above and around the air holes in the burners serve to prevent condensed fuel or the like from entering the air holes and interfering with the ow of gas through the orifices 7. Furthermore .by providing the-outlet ends of the burner tubes in vertical plane, condensed fuel .is prevented from entering the tubes at their upper ends.

It has been found in practicethat theV burner such as herein described is very effi- .cient for producing the maximum heat.

Furthermore the consumption of fuel in proportion to the heat produced is reduced to the minimum. The-burner can be used wherever gas is to be employed as a fuel. For example it can be used in cooking ranges, steam tables, large and small water boilers, in heating furnaces, etc. What is claimed is: 1. Ina gas burner the combination with f a manifold and nipples communicating tubes being disposed in vertical plane.

-the,.holes. In testimony that I claim the foregoing as my own, I have hereto affixed my signature. V

ends, the outlet openings in the ends'of the 2. In a gas burner the combination with a manifold and an upwardly tapered nipple thereon having an orifice, of a burner tube frictionally engaging and supported by the tapered nipple having air holes adjacent' the upper end of the nipple, tubular arms. diverging from the upper portion ofthe tubeand having their upper end portions inturned and oppositely disposed for direct'- ing jets of fuel upwardly and inwardly along converging lines.

3. In a gas burner the combination with a manifold and an upwardly taperednipple thereon havingan orifice,'of a burner tube frictionally 'engaging and supported by the tapered nipple having air oles adjacent the l upper end of thenipple, tubular arms 'diverging from the upper portion of the tube and *having their upper end portions inturned and oppositely disposed .for directing jets of fuel upwardly and inwardly along converging lines, the ou'tlet openings of the arms being disposed in parallel vertical plane and ared outwardly.

4l. In a gas burner the combination with a manifold and an upwardly tapered nipple thereon having an orifice, of a burner tube frictionally engaging and supported by the tapered `nipple having air holes adjacent the upper end ofthe nipple, tubular armsy diverging from the upper pofrtion of the tube and having their upper end portions inturned and oppositely disposed for directing jets of fuel upwardly and inwardly along converging lines, the outlet openings of the arms being'disposed in parallel vertical plane and flared outwardly, and a hood extending around the burner tbe and the air holes therein for deflecting moisture from A,SAMUEL A. STUM.

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